IPSW Downloads

iOS 14.3 - 18C66 for iPhone 8

This firmware is not signed. This means you cannot restore to it in iTunes.

Release Date14 December 2020
Upload Date09 December 2020
File NameiPhone_4.7_P3_14.3_18C66_Restore.ipsw
File Size4.63 GB
SHA256suma8702c225c19c18c510eed606f60b8423c222a4bfd5753494404639d94778767
MD5sum28b80d8c8de19e9c138c802f475375a6
SHA1sum4767bfce4d0a1b1d76ed28c77efa4216829e8dfd
IdentifieriPhone10,4

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 8 to your PC.
  3. Open iTunes and navigate to your iPhone 8.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone_4.7_P3_14.3_18C66_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 8 to reboot.

macOS

  1. Connect your iPhone 8 to your Mac.
  2. Navigate to your iPhone 8 in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone_4.7_P3_14.3_18C66_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 8 to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 8 to your PC.
  3. Open a terminal and navigate to the IPSW file you downloaded, e.g., cd ~/Downloads.
  4. To perform a full erase restore, type idevicerestore -e iPhone_4.7_P3_14.3_18C66_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 8 to reboot.